Drilling and riveting machine.



J. F. SCHOELLKOPF. DRILLING AND mvmme MACHINE APPLICATION FILED NOV. 4, I918..

Patented Apia 8 ,1919.

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1'. F. SCHOELLKOPF.

DRILLING AND BiVETINGMACHINE.

APPUCATION FILED NOV. 4. 19m.

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To all whom it may concern:

lie it known that l; J A0013 Faun Sci-tournnow, a citizen of the United States. residing at Do State of ;:as, haveinvented certain new and us .n improvements in Drilling; and Riveting rcfachines, of which the following is a specification. V

This invention relates to new and useful improvements in drilling and riveting roachines.

The purpose of the invention is to provide means for drilling a hole through two or more pieces of material which are to be riveted together so as'to provide a hole for the rivet, and further to drive a rivet through the hole and upset the end of the same whereby the parts are fastened together. It is particularly sought to carry out these operations continuously and Without moving the Work after it is. once placed in position until the riveting is completed.

In carrying out the invention I provide a machine or apparatus having a support on which the Work is positioned. Previous to the ywsitioningv of the Work a Washer or bur is placed on the wort: support so as to be under the Work; however if the style of rivet used does not require a washer the same is omitted.

A clamping plunger is mounted so as to be forced. down on to the work to hold it in place. A drill Works through the plunger and lowered to drill I the hole through the material which is to he riveted. Alter the hole is drilled. the

drill is raised and the plunger is raised so that the point of the rivet may he placed in the hole.- The plunger is again lowered and acts to drive the rivet through the material and hold the rivet as Well as the World in position. A finishing tool is mounted in the Work SUppOlh so as to be elevated and cut oil the projecting end of the rivet and at the same time upset said end whereby the head is termed, thus completing the rivsting operation.

It is obvious that various structures could he evolved for. carryino" and variations made in meat above descrihed. lit will he scenthat the drilling and riveting operations may he expeditiously carried out and a much more satisfactory job had than Where the Work is done by hand. Uther details of the invention will he hereinafter more specifically brought out.

s, i;u the county ct Dallas and out the invention lhe general arrange.

Specification. of Letters Eatent. Patented AprQB, 1919. .lipplicatlen hfoveinheml. nus. ilerlal lilo. $61,153. I I i The invention will he more readily linden stood from a reading of the following specification and by reference to the accompany ng drawings, in which an example of the invention is illustrated,fand wherein- Figure 1' is a side elevation of a machine constructed in accordance With this invention, I

Fig. 2 is a front elevation of the same, Fig. 3 is an enlarged sectional detailuof part of the -forward portion of the machine illustrating thedrill and finishing tool in elevation. s i l llig. l is a detail of the plunger showing the discharge opening for the drill chips.

Fig. 5 is a sectional detail of the same. .6 is a cross sectionaldetail on the line 66 of Fig. 5,.

Fig 7' shows a section of three pieces of mater al with a hole drilled through, the same,

l headed and the a pedestal which rises from a circular base 2 and carries a cap 3 at its upper end. A yoke shaped head 4 is fastened on the cap and hasthe greater portion of its length projecting forward With relation to the pedestal.

The head comprises a horizontal Work table 5 and an arm 6 overhanging the same. The

arm 6 terminates at its forward end in a vertical] sleeve 7. A vertically reciprocating hollow plunger 8 slides through the. sleeve and has a shouldered ferrule 9 secured in its lower end.

A standard 10 is bolted on the arm 6 and extends upward from the same. A lever 11 is pivoted in the standard and has its for- Ward end directed upwardly and pivotally engaged with a collar 12 fixed on the upper end of the plunger. The rear portion of the lever 11 is curved in harmony with the head 4 and has pivotal connection with a depend Fig. 8 shows the same Inate rial vvith the ing link 13. The lower end of the link 13 is pivoted to the upper end of the angular arm 14 of a foot lever 15 extending through the lease of the pedestal and pivotedbet ween.

cars 16. The lever 15 carries a foot plate 17, and when it is desired to lower the plunger 8 the operator places his foot on the plate 17 confined .in a cap 31. A hand-lever 32 piv- 29. A stop collar 35 fixed onv the bracket 29 Q 1 ,eeepss and swings the forward end of the lever 15 downward whereby the "rear. arm 14 is elevated. This in turn savings the rear end of the leverjll 11 Ward by means of the link 13, whereby the fbrward end of the lever 11 is swung downward. When the operator re moves his foot from the plate 17 the weight of the lever 11 will return the parts to their normal-position. The lever 11 carries a depending boss 18 which engages a stop 19 on the arm -6 thus limit-in the return movement of said lever as wel v as limiting the upward movement of the plunger..

-- A work support 20 is provided with a reduced shank .21 which fits in an aperture 22 in the lip 23 of the work table 5. The sup-:

port is cated directly under the plunger and has a concentric seat 24 in which thewasher 01 bur 25 may be placed. The support has a central passage 26 extendin through its shank. In Fig. 3 I-have'indb cated 1n dotted line three pleces or layerso'f material A; B and C respectively as disposed on the'support '20 in position to be riveted together. The su port thus becomes the work support. The p lunger is indicated in dotted lines asdepressed so that the ferrule 9 is pressing on the upper layer A.

-The plunger is hollow-or tubular so as to provide a passage for ,a depressible drill shaft 27. The drill shaft extends through a bracket 28' projecting from the head of the standard 10 and up through another bracket 29 spaced above the bracket28. At its upper end theshaft carries a single ball bearing 30 oted in an arm 33 on the standard 10 rests on the ball 30 -and projects forward from the same. A coiled spring 34 encircles the drill shaft'between the head 31 and the bracket surrounds the lower portion of the s ring 34 and is impinged by the cap 31 w en the drill shaft is depressed, thus limiting the downward movement of said shaft. It is obvious that the shaft is depressed by swinging the hand leverv downward. Theydrill shaft is revolved by a beveled pinion 36 9 has a central passage 40 through which themounted on the bracket 28, the shaft having 'a key-way 37 (Fig. 3) which permits the reciprocation-of said shaft while the same, is

rotating. A chuck 38 is driven into the lower end of the drill shaft and carries a depending drill 39 normally concealed within the plunger above the ferrule 9. The ferrule drill may freely pass. y

After the layers A,- B and C have been placed on the support 20 and the plunger 8 lowered so that the ferrule 9 clamps the said layers in position then erator grasps the handle lever 32 and d epresses the drill shaft so that the drill 39 is projected through the passage 40 and enters the top layer A.

The layers are drilled in succession and the .drill passes through the layer G into the passage 26, but only to a limited extent as the cap 31 impinges the collar 35 and, limits the downward movement of-the drill. The operator releases the hand lever 32 and the spring 34 which has been compressed elevates the drill shaft and raises the drill back into "the plunger. 4 i

During this drillinghoperation the opera-. I

tor keeps his foot on e plate 17, and after the hole is drilled, as shown in Fig. 7, he releases the foot lever so that the lunger is raised from the work. Thisenab es hun to quickly insert arivet 41 in the hole and then drive the same through. the layers by again.

depressing the plunger. The point of .the

shown in Fig. 8; The cutting off and up setting of the end of the rivet remains to be done.

For finishingand heading the rivet a finishing tool 42 is employed. This tool is what might betermed an inverted drill and of the drill is The top pression 43 from which cutting edges 44 radiate the cutting edges being associated with V shaped clearance gaps 45. The function of this tool is to cut off a portion of the protruding end of the rivet and spin or upset Figs. 10 and 11. dishe'd out and formed with a central dethe remainder into ahead such as is shown in Fig. 9. The cutting is carried out, of

course, by'the cutting edges 44; while the dish shape of the tool inconjunction with the depression 43 carries out the upsetting 'orspinningoperation. The tool, of course, I

is rotated and applied to the end of the rivet with considerable pressure. a h p The tool 42 is formed integral with asha-ft 46. The shaft 46 passes through'a pinion 47 and has a slot 48 receiving a-p1n 49 fastened in said pimon' whereby the. shaft may be moved vertically as it is rotated. The pinion 47 is supported on abracket fioseoured to the forward end of the table 5 under the lip 2.3.

The shaft 46' projects below the bracket 50 and carries a single ball-bearin 51 in its lower end. An eccentric 52 is fiX8( on a rock shaft mounted an a hanger 54 depending from said bracket. The eccentric 1 has a circumferential groove 55 positioned. 'to receive thckball 51 when the eccentric is rotated. t is obvious that by rotating the eccentric the shaft 46 is elevated. thus bringing the tool 42 into engagement with the protruding end of the rivet [and finishing same.

the tool shaft by pulling upward with the The shaft 53 projects beyond the hanger Stand carries a hand lever 56.1 The 7 operator rotates the eccentric andelevates I lever 56. .It is obvious that/he may thus exert considerable pressure, on the end of the rivet and the latter being made of soft metal will readily form a head. The upper end of the shaft 46 is shouldered which limits its Work, and means operating" thron mucous upward movement by engaging with t is underside of the lip 23 and thereby preventing the tool. l2 from removing too much of the end of the rivet. I

I provide a radial hole 5'? in the 20 through which the chips cut from theend of the rivet are discharged. It is evident that the drill 39 would curr y some of the drill chips up into the plunger and deposit the same above the ferrule 9. In order that these latter me be discharged 1 cut an inclined notch 58 in one side of the ferruleand provide an opening 59 in the plunger registering therewith. The inclined notch will aid in the'dischurge' of the drill chips through the opening 59. I

For driving the pinion 47 ll provide a beveled geln- (S0 driven by e'sprocket 61 mounted at one side of the bracket 50. The sprocket G1 is driven by a chain 62 from o sprocket mounted on a. counter shaft 64, supported transversely of the machine in standards 65 mounted on a bracket 66 projecting ream wurdly from the pedestal 1. The shaft $54 is suitubl driven at the required speed. A pulley 67 is mounted fast ontho shaft (i l and drives a belt 68. which extends u to and drives a pulle 69 mounted on a, she. I; 70 carried in a. bruc et 71 supported between the brwckets 28 and 29. The shaft 70 curries a beveled gear 72 on its inner end which drives the pinion 36. It will be seen that the drill shaft 27 and the tool shaft 46 are con stontly revolved; Y

Rivets cot VttllOilS lengths and diameters ous diameters would he employed. l changeable supports 20 would. used Ii rivets of difierent diameters and. different sizes of finishing tools would also he required. While lQ-huve illustrated a solid end. rivet it is within the JIOVlllOfi ot' the inven V tion to use either kinds of rivets and modify the structure accordingly.

What I claim is,

1. In a drilling and riveting machine, a work support, movable means located above the support for holding the work on the sup port, means "for drilling a hole through the the work support for cutting; o the end of the rivet depending from tho worlr and heading said rivet. i

2. ln a drilling and riveting machine a. work support, inovuhle moans lo above the support for holding the worn on the support, means for drilling a hole through the Work, and a finishing tool opci ttinog through the Work support for cutting oil the end of the rivet depending from the Work and hcudin said rivet.

In a rilling and riveting machine, a

"Work support. movable moans located uhove the support for holding the work on the support support, means for driller a z hole through the Work, and rotating; hiushingv tool ver- "tic-ally n'iovible in the Work support suid tool being constructed to head rivets.

e. in 2. drilling end riveting nizichine, u wo'rksupportl movable means located shove the support for holdii'lg the 'u'orl: on the support; means for drilling u hole through the Work, a rotating linlslnng. toolvertlcully movable in the work support, said tool be ingconstruetedto heed rivets, and means the Work While the same is on the work rivet depending from the Work. and means for elevating the finishing; tool.

7. in a drilling and riveting machine, a supporting structure work support mounted on the structure. :1 rotating}: vertically reciprocatingplunger mounted in the s'uo' po '55 structure. a rotating vtvrticull drill member depressihle ougrh the lower end of the plunger, :1. r mounted on the structure and con nected with the phuiger for depressing the stone, a hand lever mounted on the structure and engaging the drill member, means for rotating the drill member. the Work support having a vertical passage therethrougzh, a finishing tool carried by the structure and movable vertically in the passage of the Work support. said tool having its upper end provided with cutting edges and dished to upset the end of a rivet. means for rotating: the tool. and means For elevating: the tool.

l c. t drilling: a d riveting machine. a suopl ting; worlr "support noun ed on the sture u rotuting vericully reciproca the supporting stru ticull v reciprocating d hie thro the low r plmiger mounted in u rotutinover member ddpressh lure and enguu for rotating lgll support having a through, "a finishing tool carrie by the structure and movable vertically in the passage of the work support, 'said tool having its upper end provided with cutting edges and dished to upset the end of a rivet, means for rotating the tool, a lifting lever for the tool, and a device operated by the lifting lever for elevating the tool.

9. In a drilling and rivetin machine, 'a' head, a work table under the head, a Work support having a Washer seatand a central passage mounted on the Work table, a tubular plunger mounted in the head over the work support, a lever mounted on the head and connected with the plunger for depressing the same, tached to the plunger lever for swinging the same, a ferrule mounted in the lower end of the plunger and having a central passage, a drill shaft mounted in the plunger, a supvertical pass-a e there-.

foot operated connections at- .iport mounted on the head and drill shaft, a drill mounted in the lower end of the drill shaft and adapted to 'be pro I jected through the passage of the ferrule when the drill shaft is depressed, a hand lever mounted on the support and engaging the drill shaft for depressing the same, a coiled spring. surrounding the drill shaft and normally supporting the same in its ele-' vated position, means for limiting the depression of the sustaining the drill shaft, means for rotating the drill shaft, a finishing tool inov able vertically in the passage of the work support, means for rotatlng said tool, a lifting device supported by the Work table for lifting the finishing tool, and a lifting'lever connected with the lifting device for operating the same. e In testimony whereof I aflix my signature.

- JAOOBFREDSOHOELLKOPF. 

